Truck.



PATBNTBD MAY lz, 1908.

0. C. HPKINS.

TRUCK. APPLICATION FILED NOV. 23, 1907.

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No. 887,195. PATENTE) MAY 12, v1901;.

o. c. HOPK1Ns-` TRUCK.I

APPLIGATION MLBD Nov. 23, 1907.

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PATENTED MAY 12', 1,908.

0. G. HPKINS..

y TRUCK.

APPLICATION FILED NOV. 23, .1907.

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fm@ M OSCARv O. HOPKI'NOF MOUNT STERLING, NORTH CAROLINA.

TRUCK.

Specification of Letters Patent.

Patented Ma'y12, 190s.

Apfiieaa'on led- Novemberes, 1907. serial No. 403,454.

To all 'whoml 'it may concern:

Be it'know'n that I, OSCAR C. HOPKINS, a

'citizen of the United States of America,and

resident of Mount Sterling, in the county of Haywood and State of North Carolina, have Yinvented* certain new and useful Improvements in Trucks, of which the following is a speciiieation.

This invention relates to certain -new andl useful improvements in trucks for locomotives., and while the invention relates pri.- rnarily to locomotives generally to beused upon railroads., it is intended more espeeiall for engineswhich areto b e operated on rai roads and tramf lgoadswhere great .tractive power is neededat a mod/cratespeed, where Athere are uneven road beds, steep grades and sharp curves. f l' The invention is applicable also to other uses suchas upon electric motors, street cars' and the various 'other forms of motive power vehicles. f e

The present invention has for its 'objects 'among others ,to provide a -novel construe tion of truck having a central longitudinally disposed driving shaft designed tobe driven lb engines of different t' pes, there being two oil the Asame type to eac locomotive and designed to be connected together by a central.

longitudinal driving shaft with gear wheels on the inside or forward'axle. The forward axle driven by beveled'gear wheels is con# nected to the back wheel b vside rods vcon'- -Il'ected to the driving whee vof the forward axle, la multiplicity of universal couplings being provided whichallows it tomake a sharp curve without straining the parts, braces being provided on each truck and adapted for operation entirely independent of each other., I provide 'av steel plate fitted on the'inside of the truck frame and bolt-ed thereto so as to features thereof will be particularly pointed out in the appended claims,

The invention is clearly villustrated in the accompanying drawings, which, with the numerals of reference marked thereon, forni a part of this specification, and in which cured by Figure 1 is atop plan view of my improved truck. Fig. 2 is a verticalcross'sectlon on thel line 2-2 of Fig. 1.

is a'cross section on the line 4-4 of Fig. 1. Fig. 5 is a vertical lon itudinal section on the line 5-'5 of Fig. 1, loo ing in the direction of the arrow.l Fig. 6 isa perspective view of one of the brake shoe holders, showing the brake shoe and the closely associated parts. Fig. 7 is a perspective view'of the Uuidebox removed. Fig 8 is-an elevation oli the side of the truck frame removed. Fig. 9'is an enlarged sectional detail of the main gear wheel.

Fig. '10 is a view looking at the opposite side of the guide box, as seen in Fig. 7.

Like numerals ofreference indicate like parts throughout the several views.

Referring now tothe details of the drawings 1., 1 are theside frames'ofthe truck each provided withvtwo journal bearings 2, 2, vas seen bestin Fig. 8 3 y33 being the complemen- Fig. 3 is a side elevavtion with one ot-the wheels removed. Flg 4 tal portions of the bearings, secured in position by the vertical bolts 4 ,assing afiough the flanges 5 thereon and t irough the side frames. i Each of therside frames 'is provided with an outwardly Ibowed or curved portion 6 providing a chamber 7 in which are 'disposed I the slprings 8, as indicated best in Figs. 1 and 2. ach 'of these' side frames has an in.

Wardly extending projection at the bottom,

and fitted to and secured to theseinwardly projections is the steel plate 10 seextending olts or other means 11' passed through-projections inthe iianges, and thus connected the truck'eannot possibly get out of square, the.. two side frames'being fixedfy held in parallel relation. This late'is cut away, as shown at 12, toy provi e al1/open;

ing through which ,the main gear wheel of Sie forwardshaft may operate, -as seen in .1g.1. 13 is the bottom cross brace secured as by bolts or screws-14 to the under sides of the side frames, as'seen best infFig. 2. l

15 is the truck bolster mounted upon the springs 8, as seen best inFig. 2/,jb'eing represented by dotted lines in'Fig. l1. A

16 is a metallic strap for holding down the main truck bolster, being secured `by stud bolts 1'? tothe liorino'ntal shoulders or portions 18 ol.' the side frames, as seen in Figs. 3 and'S. it will be seen that the strap 16 is 2 s l M 837,195

made readily removable so that the bolster may at any time begreinovecl for the renewal of' broken springs or' fjorlother purposes Without `interferingwiththe truck 'frames'.y

Eaeh side lranies provided willifan oil eup 19 at each end, shown in lligsQl and 3, by

"ijneans of which lubricantjis suppliellto the e adeinsral bearing -2'f1fforfthe central longituL and afhalf inches or nn'o're'ai'nil 1 .,atlits rea-re dln abolir-or beta forward 11er-ive n, y i

this aXleQ'Zfis ythe'trnoli'gear*Wheel 321 formed ne taxiesyasemi-i,be

" andai" 5 20 iS .the ,front Cross brace in Fignl, and this cross brace is formed with -iirlinal shafty 22 eX- yi thepin )n about two @bearing :1)

his lo ,liroug l e 27,` lasE seen at in twov sectio1is,'tliel toothed;"portion 35 of which isbolted to thegearcasing lbybolts BLfthe he sol" which are oountersun'k beetlik or cogs ol the vtoo thed portion "in 4.' lThe'"portion frests .againsta"` shonlderBQ ori the `sleeve on the axle, the gearfwheel casing being"made pre* ferably 'o :eteel l and keyed to the axle, as

seen at 40 and restingagainsta shoulder 'on baekjside [which prevents it `from being jfslipied The?longitudinalshalt 22 has a Y ,j sma lshouller against which the pinion 23 j bears topreve'nt` it fr'oinfslip ping An oil cup Illl-isprovided for lubriatingfthe shaft 27, as

in the cape? whichie scoured totlieTguide 'i rear driving wheelefll', being rconnected `with "feo rest pins or thelike 48 on saidwheels, aswill` `beI'olearly understood Aupon relercnoe to Figs. "l andlv. l flfhei'jonrnal.brasses,arerprovirled with two oil-'boxes one large one fitted in the fraineiinfthegsockot and the otherv onefjat the KIfontside end-` rvithoil hole extending through y `icl-ji dbvnneaisoftheik 2901i astri bolti() engaged inthe veel e er ,tliereol". L g, f A l Fig.` shows f elearlyfr the,"conneetlon be- 'to the outside end which is ver desirable and almost necessary on .rough an crooked roads to oil between the journal brass and the driving Wheel. l

In )raotiee itwtalres two ofltheseltrncks to nnivke the motor "gearfor a locomotive, either 'one Working in front or behind, the

vtrvo` being :connected together by the longitudinal shaft, Aand` when-this `is, donef four universal couplings are rovided, one being` l very `close to `earl-h1 truc which allowg the shaft to give any way on pivotal bearings andzstill transmitthe same power to the gear j wheel. `-The gear Wheels beingu on the for lWard alxleflor the axle nearest theen'gine permits the trucks to make a'sharper curve, and brin s the boxing and :moet 'of the parts whic i are liable to `need attention and re pairs to the place where they oanhe readily l gotten at Without removing anything, which is a great rconvenlence and saving of time;

lt to be, understood" that the driving "Wheels land the gear wheelsshould be made, of a diameter'according to" the grade and other conditions. Upon an ordinaryv forty. -ton locomotive the driving Wheels should beV say thirtyeixinches: in dlanieter, `with four and a half hall and one-.halfinclr taperto `the ball, and the truck gear Wheel 34k shouldbe [saytwenty-eight inches in diameter (and the cooperating gear 23 fourteen inches 1n dll, arneter,` `these fproportlons,l however, being changed according to the var ing conditions and road for: Wluoh they truc 1s Vto be oonstruoted. l ,v

Projecting laterally from each side frame 1 adjacent the ,curved portions 6 thereof are the outwardly,extending pins 49 which serve ieuV pivotsupon,,which the brake hangers '50 are pivotallynlounted, as seen bestin Figs. 3 and 8. ceived Within the bifurcations 51 of the brake shoe holders 52, ka pivot 53 being supported in the bifurcationsand receiving the lower lug' throngh which passes the vertioalbolt 516 -which serves asapivot 'for the lbrake shoe v57,v all as clearlyl illnstrated` in Fig. 6.

p'is a brake beam engaged in the groove '59rino`thebralie shoe ho der 52 to which `is pivotally mounted` the bifuroated en'd() ot an adjustable levergl, being the pivot tweenV `two brake shoe holders, the lever beas at 63 in said View.

64 1n Fig. 8 n'idicates holes in thezside frames forthe connection of the cross brace r rodswlrich are securedby bolts Withnuts on.l

theouter endsthereof.y On they inner face of ing shown .in two' parts adjustably connected These brake hangers 5U are re#` lend of the hanger, as seen clearly in Fig. 6.' 'Y The brake shoe hanger ,has lugs 5e at its vupper and lower ends andan intermediate each of the side frames at the bottom thereof is a lug or projection 65, seen best in Fig. 8 to which to bolt the bottom cross brace 13.

67 is a sectional brake beam for the back Wheel, as seen in Fig. 1, the adjacent ends of the sections thereof being pivotally connected together by a pin 68 on the one number engaging in the overlapped end of the other member. The sectional brake beam 61, the end of which is seen in Fig. 6, is simi'- lar in its nature and is connected at the adjacent ends of its members by a pin 7 0 on the one member en raging a slot 71 in the overlap ing end o the other member. This bra e vbeam is supported by a metallic strap bolted to the bottom of the steel plate .10, said steel plate having a projection downward from its bottom and bolted to the supporting strap in front of the brake beam 67 seen in Fig. 2.

It is to be noted that the 'cogs or teeth of to prevent it from coming forward, which otherwise would occur when the brake rod 73 is Vpulled upon.

73 is the brake rod pivotally connected gith the brake beam 61, all as clearly seen in ig. 1. The rear end of the T-guide 26 is provided 'with a top fork.74 which is made removable, 'as indicated in Fig. 7, there being a s ace or bifurcation, as seen insaid figures, or the reception of the, bottom cross brace 1,3, as

the beveled gears point straight to the cenv ter of their shafts instead of being skew or twist gears. It will also be noted that the gear wheels are located on the inside or forward axle and clear of the bolster and that the brakes on each truck are entirely independent of each other.

From the above it will be-seen that I have devised a simple, strong and durable truck for the purpose set forth, and while the structural embodiment of my invention as hereinbefore disclosed is what I at the present time consider preferable, it is evident that the same is subject to changes, variations and modifications in the relative arrangement' and proportion of parts without departing from the spirit of the invention or sacrificing anyof its advantages.' I therefore do not wish tc limit myself to the details of construction -hereinbefore disclosed, but reserve the right to make such changes, variations and modifications as comev roperly within the scope of the a pended c aims.

What is claime as new is ,-k

1.. In a trucklof the character described, a central longitudinal driving shaft, a gear thereon, a front cross brace having a bearing for, said shaft, a driving axle, and a gear thereon meshing Ywith the gear on the longitudinal shaft.

2. In a truck of the. character described,

j ections, and

side frames having inwardly extending proa plate securedto said projec-v tions to kee the side truck frames arallel with each ot er and cut away at its orward edge to receive the main gear wheel.

4esl

3. In a truck of the character described,

side truck frames having inwardly extending portions at their lower sides, a steel plate se-- cured to said projections and having an opening forY the gear on the front driving axle, combined with the front driving axle and the gear thereon.

4. In, a truck of the character described, side truck frames having inwardly pro'ecting portions a't their lower sides, a metal p ate se cured to and restin on said projections and having an opening or thegear on the front driving axle, combined with Athefi'ont drivin axle, a gear thereon, a longitudinal shaft an a gear thereon meshing with said gear.

5. Ina truck of the character side frames having inwardly projecting portions, -a` late resting 'on and secured to the same, a ont brace connecting the forward portions of said side frames, a central longitudinal driving shaft havin a bearing in said cross brace, the forward riving axle, means described, v

for (.'riving said axle from said shaft, and l means for -driving the rear axle therefrom.

- 6. In a truck, aside truck frame formed with a'ceiitral outwardly curved portion, an

inwardly extending portion ,at its lower side and openings for the reception AYof cross braces, and projecting ortions forming pivots for the brake shoe olderhangers.

,7 In a truck, a front driviii axle., a front cross brace, a guide clamped a out the front driving and a longitudinal central shaft having its, rear end mounted in said bearing and its portion forward thereof mounted in said cross brace.

8. A locomotive engine truck having a pair of gear wheels, and a plate secured to the side truck frames and having an opening for one of said ears, said truck being designed to be ,coup ed to another truck with" the brakes on each truck independently mounted ando erated. f.

9. n a truck of the character described, a side truck frame, a han 'er pivotally mounted thereon, a brake shoe older pivptallycon- Vnected with the hanger andhavinglugs toA receive'the pivot of a brake shoe, and a axle and having 'a bearing for a shaft,-

groove upon the opposite face toreceive a ings near the ends, combined with axles,

mounted in said bearings, wheels on said axles, brake shoe holders pivotally supported y d m0 ble .emilion .an

of a be gea meshing lwith seid, pinion mld do'mprisulga eveled peil'twn l'levmg Leeth 'and Aa. separable easing, and means connect n d i'ngthe Senetpgether, sa d meanebeimg eoun- A;"tersmk,,beyveelytheemd teeth amd a, plate Secured' noy theslde frames of the truck smal 

